-Chemical Formulae
F --------------------
-Charges
I I
Elements want to be like noble
gasses
·
!
I
Loose
!
least electrons to
or
gain I
Group
·
!
there
get
-
Ions are + ! . . . . . . . . - - - - - - - - - -
-
Group
·
2
Ions
-
are + 2
Group
·
3-12
-
Transition metals
Ag
-
= + 1
Group
·
13
Fons
-
are + 3
Group
·
14-1
Become
-
anions
Charg 18-group number
-
=
Group
-
15 = 18-15 = -3
Group
·
14
Anions cations
-
or
-
C = -
4
-Writing _
Formulae
Neutral
·
compound must be obtained
-Charges must cancel out
Mg + Ce ↳
MEE MgCha
Mgh + 02 ·
MgzOz MgO
(u2" + o Cu0
OH is a polytomic in
Mg2 + OH o
Mg (OH
:
, Mo Concept
- - - - - - -
·
SI unit for an amount of a substance
M
n = M
beton
-
mass Found o
~
"
Molar
number of moles
element Symbo
M ·
# - -
----
-
(g)
M · mass
↑ Molar mass
(g .
mol")
Molar Mass : Mass in of mol of that substance
grams
one
N
n =
NA
N · number of particles (atoms ,
molecules etc . . .
,
)
*
Na a
Avagadros Constant (6 ,
02x10 mol")
n = vm
22 ,
4 dm" at STP
=
V · Volume (dm)
Um m Molar volume (dm mol")
-------
F
'STX :
!· Pressure 101 ,3
=
,
·
Temp
"
cV 23k
"
n = .
=
·
Volume = 22 , 4
L ----------
C + Concentration (moldm)
Molar concentration : Amount of solute per unit volume of solution
1000
=
1000
=
1000
=
# ↳ 3
3 3 3
mm cm dm M
F T
F
X1000 X1000 X)000
F --------------------
-Charges
I I
Elements want to be like noble
gasses
·
!
I
Loose
!
least electrons to
or
gain I
Group
·
!
there
get
-
Ions are + ! . . . . . . . . - - - - - - - - - -
-
Group
·
2
Ions
-
are + 2
Group
·
3-12
-
Transition metals
Ag
-
= + 1
Group
·
13
Fons
-
are + 3
Group
·
14-1
Become
-
anions
Charg 18-group number
-
=
Group
-
15 = 18-15 = -3
Group
·
14
Anions cations
-
or
-
C = -
4
-Writing _
Formulae
Neutral
·
compound must be obtained
-Charges must cancel out
Mg + Ce ↳
MEE MgCha
Mgh + 02 ·
MgzOz MgO
(u2" + o Cu0
OH is a polytomic in
Mg2 + OH o
Mg (OH
:
, Mo Concept
- - - - - - -
·
SI unit for an amount of a substance
M
n = M
beton
-
mass Found o
~
"
Molar
number of moles
element Symbo
M ·
# - -
----
-
(g)
M · mass
↑ Molar mass
(g .
mol")
Molar Mass : Mass in of mol of that substance
grams
one
N
n =
NA
N · number of particles (atoms ,
molecules etc . . .
,
)
*
Na a
Avagadros Constant (6 ,
02x10 mol")
n = vm
22 ,
4 dm" at STP
=
V · Volume (dm)
Um m Molar volume (dm mol")
-------
F
'STX :
!· Pressure 101 ,3
=
,
·
Temp
"
cV 23k
"
n = .
=
·
Volume = 22 , 4
L ----------
C + Concentration (moldm)
Molar concentration : Amount of solute per unit volume of solution
1000
=
1000
=
1000
=
# ↳ 3
3 3 3
mm cm dm M
F T
F
X1000 X1000 X)000
